Cutting blade for a riding mower



FIG. 1 is a front view of a cutting blade for a riding mower showing our new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is right side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is front perspective view thereof;

FIG. 8 is rear perspective view thereof;

FIG. 9 is an enlarged left side view thereof;

FIG. 10 is an enlarged right side view thereof; and,

FIG. 11 is an enlarged perspective view of a portion thereof taken along lines 11-11 in FIG. 7.

The broken line showings of FIGS. 1-11 are environmental only and not part of the claimed design.

The dashed-dotted line showings of FIGS. 1-11 illustrate a boundary between the claimed design and environmental features and form no part of the claimed design. 

CLAIM The ornamental design for a cutting blade for a riding mower, as shown and described. 